Both the Secretary-General and his/her staff should be seen to be the servants of Commonwealth countries collectively. They derive their functions from the authority of Commonwealth Heads of Government; and in the discharge of his/her responsibilities in this connection the Secretary-General should have access to Heads of Government...[1]

”

The headquarters of the Secretary-General, as with the Secretariat generally, is Marlborough House, a former royal residence in London, which was placed at the disposal of the Secretariat by Queen Elizabeth II. However, as the building cannot house all of the Secretariat's staff in London, additional space is rented elsewhere in London.[2] From this operational base, a large part of the Secretary-General's work involves travelling around the Commonwealth keeping in personal contact with those at the heart of the governments of member states.[2]

The Secretary-General receives a salary of nearly £160,000 (2015) and a four‑storey mansion, Garden House, in Mayfair as their official residence.[3]

The Secretary-General leads the Commonwealth Secretariat, and all Secretariat staff are responsible and answerable to him or her. He or she is supported by three Deputy Secretaries-General, which are elected by the Heads of Government via the members' High Commissioners in London.[2] Currently, the three Deputy Secretaries-General are Deodat Maharaj, Gary Dunn and Josephine Ojiambo. Until 2014, only two Deputy Secretaries-General were appointed along with an Assistant Secretary-General for Corporate Affairs. The Secretary-General may appoint junior staff at his own discretion, provided the Secretariat can afford it, whilst more senior staff may be appointed only from a shortlist of nominations from the Heads of Government.[2] In practice, the Secretary-General has more power than this; member governments consult the Secretary-General on nominations, and the Secretary-General has also at times submitted nominations of his own.[2]

Formally, the Secretary-General is given the same rank as a High Commissioner or ambassador. However, in practice, his or her rank is considerably higher.[2] At CHOGMs, he or she is the equal of the Heads of Government, except with preference deferred to the longest-serving Head of Government. At other ministerial meetings, he or she is considered primus inter pares.[2] But for the first 3 years (of the job's existence) the Foreign Office refused to invite the Secretary-General to the Queen's annual diplomatic reception at Buckingham Palace, much to Arnold Smith's irritation, until in 1968 this refusal was over-ridden by the Queen herself[4]

The Secretary-General was originally required to submit annual reports to the Heads of Government, but this has since been changed to reporting at biennial Commonwealth Heads of Government Meetings (CHOGM).[2] The Secretary-General is held responsible by the Commonwealth's Board of Governors in London.[1]

Since the 1993 CHOGM, it has been decided that the Secretary-General is elected to a maximum of two four-year terms.[1] The election is held by the assembled Heads of Government and other ministerial representatives at every other CHOGM. Nominations are received from the member states' governments, who sponsor the nomination through the election process and are responsible for withdrawing their candidate as they see fit.[1]

The election is held in a Restricted Session of the CHOGM, in which only Heads of Government or ministerial representatives thereof may be present. The Chair of the CHOGM (the Head of Government of the host nation) is responsible for ascertaining which candidate has the greatest support, through the conduct of negotiations and secretstraw polls.[1]

There is usually a convention that an incumbent seeking a second term in office is elected unopposed for his or her second term.[5] However, this was broken by a Zimbabwe-backed bid for Sri Lankan Lakshman Kadirgamar to displace New Zealand's Don McKinnon in 2003. At the vote, however, Kadirgamar was easily defeated by McKinnon, with only 11 members voting for him against 40 for McKinnon.[6]